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2011-03-12 - Confoo 2011 presentation
Slides are available from the commandlinefu presentation at Confoo 2011: http://presentations.codeinthehole.com/confoo2011/
2011-01-04 - Moderation now required for new commands
To try and put and end to the spamming, new commands require moderation before they will appear on the site.
2010-12-27 - Apologies for not banning the trolls sooner
Have been away from the interwebs over Christmas. Will be more vigilant henceforth.
2010-09-24 - OAuth and pagination problems fixed
Apologies for the delay in getting Twitter's OAuth supported. Annoying pagination gremlin also fixed.




Commands using sed from sorted by
Terminal - Commands using sed - 1,077 results
lynx --dump http://en.trending-topic.com/countries/Mexico/ | grep "62]#" | sed 's/\[62\]//g'
2013-03-12 16:25:14
User: xmuda
Functions: grep sed

In these command i use lynx to get the top trend topic of Mexico, if you replace Mexico with other country, you will get the #1 Trending topic

cat /var/lib/dpkg/info/*.md5sums|grep usr/sbin/sshd|sed 's,usr,/usr,'|md5sum -c
2013-03-12 11:20:48
User: Ztyx
Functions: cat grep md5sum sed

Replace "user/sbin/sshd" with the file you would like to check. If you are doing this due to intrusion, you obviously would want to check size, last modification date and md5 of the md5sum application itself. Also, note that "/var/lib/dpkg/info/*.md5sums" files might have been tampered with themselves. Neither to say, this is a useful command.

read -p 'Script: ' S && C=$S.crypt H='eval "$((dd if=$0 bs=1 skip=//|gpg -d)2>/dev/null)"; exit;' && gpg -c<$S|cat >$C <(echo $H|sed s://:$(echo "$H"|wc -c):) - <(chmod +x $C)
2013-03-10 08:59:45
User: rodolfoap
Functions: cat chmod echo gpg read sed wc

(Please see sample output for usage)

Use any script name (the read command gets it) and it will be encrypted with the extension .crypt, i.e.:

myscript --> myscript.crypt

You can execute myscript.crypt only if you know the password. If you die, your script dies with you.

If you modify the startup line, be careful with the offset calculation of the crypted block (the XX string).

Not difficult to make script editable (an offset-dd piped to a gpg -d piped to a vim - piped to a gpg -c directed to script.new ), but not enough space to do it on a one liner.

Sorry for the chmod on parentheses, I dont like "-" at the end.

Thanks flatcap for the subshell abbreviation to /dev/null

echo "eval \"\$(dd if=\$0 bs=1 skip=XX 2>/dev/null|gpg -d 2>/dev/null)\"; exit" > script.secure; sed -i s:XX:$(stat -c%s script.secure): script.secure; gpg -c < script.bash >> script.secure; chmod +x script.secure
2013-03-09 11:16:48
User: rodolfoap
Functions: chmod echo gpg sed stat

(Please see sample output for usage)

script.bash is your script, which will be crypted to script.secure

script.bash --> script.secure

You can execute script.secure only if you know the password. If you die, your script dies with you.

If you modify the startup line, be careful with the offset calculation of the crypted block (the XX string).

Not difficult to make script editable (an offset-dd piped to a gpg -d piped to a vim - piped to a gpg -c directed to script.new ), but not enough space to do it on a one liner.

sed -i.awkbak "s/\([:,]\)oldspiderman/\1newspiderman/" /etc/group
2013-03-01 23:48:20
User: iPaulo
Functions: sed
Tags: sed groups

Assuming a convention looking group file, this command will eject oldspiderman from the leagueofsuperfriends group and add newspiderman:






sed -i -n '/%/p' *.php
find . -type f -size +0 -printf "%-25s%p\n" | sort -n | uniq -D -w 25 | sed 's/^\w* *\(.*\)/md5sum "\1"/' | sh | sort | uniq -w32 --all-repeated=separate
2013-02-23 20:44:20
User: jimetc
Functions: find sed sh sort uniq

Avoids the nested 'find' commands but doesn't seem to run any faster than syssyphus's solution.

wget -q -O - http://listen.di.fm/public2 | sed 's/},{/\n/g' | perl -n -e '/"key":"([^"]*)".*"playlist":"([^"]*)"/; print "$1\n"; system("wget -q -O - $2 | grep -E '^File' | cut -d= -f2 > di_$1.m3u")'
2013-02-20 03:37:41
User: Zort
Functions: perl sed wget

1.- Enter into the playlist path.

2.- Run the command.

3.- Playlists created!

xxd -p /dev/urandom |fold -60|head -30|sed 's/\(..\)/\1 /g'
2013-02-19 22:18:52
User: psifertex
Functions: fold head sed

Replaces hexdump with the more succint xxd, and the sed was unnecessarily complex.

curl -s 'http://xkcd.com/rss.xml' | xpath '//item[1]/description/text()' 2>&1 | sed -n 's/.*title="\([^"]*\)".*/\1/p' | fold -s
2013-02-16 22:38:26
User: putnamhill
Functions: fold sed
Tags: sed curl fold xpath

I look at xkcd in my news reader, but it displays the image's title attribute only for a few seconds which makes reading the longer ones more challenging. So I use this to display it in my console.

hexdump -v -e '"%u"' </dev/urandom|fold -60|head -n 30|sed 's/\(.\{2\}\)/\1 /g'
2013-02-16 12:56:24
User: knoppix5
Functions: fold head hexdump sed


od /dev/urandom -w60 -An|sed 's/ ..../ /g'|head -n 30

(this one lacks digits 8 and 9)

for i in *RET.zip; do unzip -l "$i"| grep -B 4 XXX | grep RET| sed "s/.\+EPS/EPS/" |xargs -I '{}' cp '{}' out/'{}';done;
sudo apt-get <apt-get command and options> --print-uris -qq | sed -n "s/'\([^ ]\+\)' \([^ ]\+\) \([^ ]\+\) MD5Sum:\([^ ]\+\)/wget -c \1/p" > dowload_deb_list.txt
touch file{1..10}.txt ; ls *txt| sed -e "p;s/\.txt$/\.csv/"|xargs -n2 mv
msgfilter --keep-header --input input.po awk '{}' | sed '/^#$/d; /^#[^\:\~,\.]/d' >empty.po
2013-02-08 08:05:32
User: seanf
Functions: awk sed

Also removes translator comments. You can remove the header by omitting --keep-header, but if your msgids contain non-ASCII characters you will need the header to specify a suitable charset.

find /path/ -type f -exec grep -l '<string of text>' {} \; | xargs sed -i -e 's%<string of text>%<new text string>%g'
sed -i 's/http:\/\/old\/new\///g' index.html
sed -i "0,/enabled/{s|enabled=0|enabled=1|}" /etc/yum.repos.d/remi.repo
dpkg-query -Wf '${Package}\n' | xargs dpkg --status | sed '/^Conffiles:/,/^Description:/!d;//d' | awk '{print $2 " " $1}' | md5sum -c 2>/dev/null | grep FAILED$ | cut -f1 -d':'
2013-01-31 16:52:38
User: hallmarc
Functions: awk cut grep md5sum sed xargs

This functionality seems to be missing from commands like dpkg. Ideally, I want to duplicate the behavior of rpm --verify, but it seems difficult to do this in one relatively short command pipeline.

color()(set -o pipefail;"$@" 2>&1>&3|sed $'s,.*,\e[31m&\e[m,'>&2)3>&1
cd $(ls -1 | sed -n '<N>p')
git grep -l foo | xargs sed -i 's/foo/bar/g'
2013-01-29 16:02:21
User: Schleis
Functions: grep sed xargs
Tags: git

Find all the occurrences in the git repo of 'foo' and replace with 'bar'

find $folder -name "[1-9]*" -type f -print|while read file; do echo $file $(sed -e '/^$/Q;:a;$!N;s/\n //;ta;s/ /_/g;P;D' $file|awk '/^Received:/&&!r{r=$0}/^From:/&&!f{f=$0}r&&f{printf "%s%s",r,f;exit(0)}');done|sort -k 2|uniq -d -f 1
2013-01-21 22:50:51
User: lpb612
Functions: awk echo find read sed sort uniq

# find assumes email files start with a number 1-9

# sed joins the lines starting with " " to the previous line

# gawk print the received and from lines

# sort according to the second field (received+from)

# uniq print the duplicated filename

# a message is viewed as duplicate if it is received at the same time as another message, and from the same person.

The command was intended to be run under cron. If run in a terminal, mutt can be used:

mutt -e "push otD~=xq" -f $folder

sed '/^\s*[^@%]/s=\([A-Z][A-Z]*\)\([^}A-Z]\|},$\)={\1}\2=g' literature.bib > output.bib
2013-01-15 22:24:17
User: michelsberg
Functions: sed
Tags: sed latex BibTeX

It is often recommended to enclose capital letters in a BibTeX file in braces, so the letters will not be transformed to lower case, when imported from LaTeX. This is an attempt to apply this rule to a BibTeX database file.

DO NOT USE sed '...' input.bib > input.bib as it will empty the file!

How it works:


Apply the search-and-replace rule to lines that start (^) with zero or more white spaces (\s*), followed by any character ([...]) that is *NOT* a "@" or a "%" (^@%).

s=<some stuff>=<other stuff>=g

Search (s) for some stuff and replace by other stuff. Do that globally (g) for all matches in each processed line.


Matches at least one uppercase letter ([A-Z][A-Z]*) followed by a character that is EITHER not "}" and not a capital letter ([^}A-Z]) OR (|) it actually IS a "}", which is followed by "," at the end of the line ($).

Putting regular expressions in escaped parentheses (\( and \), respectively) allows to dereference the matched string later.


Replace the matched string by "{", followed by part 1 of the matched string (\1), followed by "}", followed by the second part of the matched string (\2).

I tried this with GNU sed, only, version 4.2.1.

curl -s -L http://nytm.org/made-in-nyc | grep "(hiring)" | sed -re 's/<([^>]+)>//g;s/^([ \t]*)//g'